Sorry if this thread is old but I just wanted to say that I am going to do a project like this myself.
Stage 1: Setup -
Get a base that has the basics and some advanced stuffs
Stage 2: Mining -
Get enough resources to make the machinery that will be needed (power generation, quarries, processing of resources, etc.)
Stage 3: Building -
Build crap! Build a HUGE processing facility and make the ingots into blocks like Zudguard said.
Stage 4: DO IT! -
Mine the world! xD